Atlas of Hillforts of Britain and Ireland

WA1698 Byrllysg Fort, Merioneth

LiDAR 1m DTM Hillshade

LiDAR 1m DTM Hillshade

Satellite Imagery

Satellite Imagery

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HER:  Gwynedd 1070 (None)

NMR:  SH 52 SE 4 (302724)

SM:  ME064

NGR:  SH59602410

X:  259600  Y:  324100  (OSGB36)

Summary

Small circular fort located on slopes above Morfa Dyffryn just N of mouth of the Afon Ysgethin. Moderate to strong surrounding slopes to N, S and W, moderate on E. Measures 58m N-S by 54m with interior area 0.22ha. To N, W and S, where there are steep slopes, scarped and natural protection aided by addition of small stone bank ,2m wide and 0.4m high. On shallower E side a curved bank and outer ditch cross the neck of the spur. Bank is c.12 m wide at broadest point and ditch c. 3.6 m wide with bottom c. 3m from crest of bank. Modern stone wall on top of the bank to SW. Entrance on N side of the bank, but walls and stone clearance. Modern field wall revetment inside bank. No visible traces of habitation, but likely. Improved pasture. Part-destroyed by construction of a cottage and disturbed by field walls and clearance of stone. On 1st Ed. OS map (1889). Minimal investigations, undated.

Status

Citizen Science:  ✗

Reliability of Data:  Confirmed

Reliability of Interpretation:  Confirmed

Location

X:  -454611  Y:  6945375  (EPSG: 3857)

Longitude:  -4.0838359999708995  Latitude:  52.79612255417893  (EPSG:4326)

Country:  Wales

Current County or Unitary Authority:  Gwynedd

Historic County:  Merioneth

Current Parish/Community/Council/Townland:  Dyffryn Ardudwy

Monument Condition

Part-destroyed by construction of a cottage and disturbed by field walls and clearance of stone.

Condition:
Extant   ✓
Cropmark   ✗
Likely Destroyed   ✓

Land Use

Improved pasture.

Current Use:
Woodland   ✗
Commercial Forestry Plantation   ✗
Parkland   ✗
Pasture (Grazing)   ✓
Arable   ✗
Scrub/Bracken   ✗
Bare Outcrop   ✗
Heather/Moorland   ✗
Heath   ✗
Built-up   ✗
Coastal Grassland   ✗
Other   ✗

Landscape

Hillfort Type

Small circular fort located on slopes above Morfa Dyffryn just N of mouth of the Afon Ysgethin. Moderate to strong surrounding slopes to N, S and W, moderate on E.

Type:
Contour Fort   ✗
Partial Contour Fort   ✗
Promontory Fort   ✗
Hillslope Fort   ✓
Level Terrain Fort   ✗
Marsh Fort   ✗
Multiple Enclosure Fort   ✗

Topographic Position

Position:
Hilltop   ✗
Coastal Promontory   ✗
Inland Promontory   ✗
Valley Bottom   ✗
Knoll/Hillock/Outcrop   ✗
Ridge   ✗
Cliff/Plateau-edge/Scarp   ✗
Hillslope   ✓
Lowland   ✗
Spur   ✓

Dominant Topographic Feature:  Spur

Aspect:
North   ✗
Northeast   ✗
East   ✗
Southeast   ✗
South   ✗
Southwest   ✓
West   ✗
Northwest   ✗
Level   ✗

Altitude:  115.0m

Boundary

N/A


Dating Evidence

None

Reliability:  D - None

Principal Activity:
Pre 1200BC   ✗
1200BC - 800BC   ✗
800BC - 400BC   ✗
400BC - AD50   ✗
AD50 - AD400   ✗
AD400 - AD 800   ✗
Post AD800   ✗
Unknown   ✓

Other Activity:
Pre Hillfort:   None
Post Hillfort:   None

Evidence:No related records

Investigation History

On 1st Ed. OS map (1889). Ordnance Survey observation 1972. GAT site investigations 1982, 1986, 1994. GAT prehistoric defended enclosures survey 2005-2006.

Investigations:
1st Identified Map Depiction (1889):   OS map.
Other (1972):   Ordnance Survey observation.
Other (None):   GAT site invistigations.
Other (None):   GAT prehistoric defended enclosures survey 2005-2006.

Interior Features

None

Water Source

Stream 0.08km outside fort.

Source:
None   ✓
Spring   ✗
Stream   ✗
Pool   ✗
Flush   ✗
Well   ✗
Other   ✗

Surface

None

Interior Features (Surface):
No Known Features   ✓
Round Stone Structures   ✗
Rectangular Stone Structures   ✗
Curvilinear Platforms   ✗
Other Roundhouse Evidence   ✗
Pits   ✗
Quarry Hollows   ✗
Other   ✗

Excavation

None

Interior Features (Excavation):
No Known Excavation   ✓
Pits   ✗
Postholes   ✗
Roundhouses   ✗
Rectangular Structures   ✗
Roads/Tracks   ✗
Quarry Hollows   ✗
Other   ✗
Nothing Found   ✗

Geophysics

None

Interior Features (Geophysics):
No Known Geophysics   ✓
Pits   ✗
Roundhouses   ✗
Rectangular Structures   ✗
Roads/Tracks   ✗
Quarry Hollows   ✗
Other   ✗
Nothing Found   ✗

Finds

None

Interior (Finds):
No Known Finds   ✓
Pottery   ✗
Metal   ✗
Metalworking   ✗
Human Bones   ✗
Animal Bones   ✗
Lithics   ✗
Environmental   ✗
Other   ✗

Aerial

None

Interior Features (Aerial):
APs Not Checked   ✓
None   ✗
Roundhouses   ✗
Rectangular Structures   ✗
Pits   ✗
Postholes   ✗
Roads/Tracks   ✗
Other   ✗

Entrances

Entrance on N side of the bank, but walls and stone clearance confuse matters.

Total Number of Breaks Through Ramparts:  
None:   Disturbance confuses interpretation.

Number of Possible Original Entrances:  
2:   None

Guard Chambers:  ✗

Chevaux de Frise:  ✗

Entrances:
1. Simple Gap (North):   None

Enclosing Works

To N, W and S, where there are steep slopes, defences scarped and natural protection aided by addition of small stone bank ,2m wide and 0.4m high. On shallower E sid 0.22ha.e a curved bank and outer ditch cross the neck of the spur. Bank is c.12 m wide at broadest point and ditch c. 3.6 m wide with bottom c. 3m from crest of bank. Modern stone wall on top of the bank to SW.

Enclosed Area:
Area 1:   0.22ha.
Total:   0.22ha.

Total Footprint Area:  Noneha.

Ramparts

None

Multi-period Enclosure System:
✗   None

Ramparts Form a Continuous Circuit:
✓   None

Number of Ramparts:  
NE Quadrant:   1
SE Quadrant:   1
SW Quadrant:   1
NW Quadrant:   1
Total:   1

Morphology

Current Morphology:
Partial Univallate   ✗
Univallate   ✓
Partial Bivallate   ✗
Bivallate   ✗
Partial Multivallate   ✗
Multivallate   ✗
Unknown   ✗

Detailed Morphology:
Partial Univallate   ✗
Univallate   ✗
Partial Bivallate   ✗
Bivallate   ✗
Partial Multivallate   ✗
Multivallate   ✗

Surface Evidence

Probably stone-wall/rubble site.

Enclosing Works (Surface):
None   ✗
Earthen Bank   ✗
Stone Wall   ✓
Rubble   ✓
Wall-walk   ✗
Evidence of Timber   ✗
Vitrification   ✗
Other Burning   ✗
Palisade   ✗
Counter Scarp Bank   ✗
Berm   ✗
Unfinished   ✗
Other   ✗

Excavated Evidence

None

Enclosing Works (Excavation):
None   ✗
Earthen Bank   ✗
Stone Wall   ✗
Murus Duplex   ✗
Timber-framed   ✗
Timber-laced   ✗
Vitrification   ✗
Other Burning   ✗
Palisade   ✗
Counter Scarp Bank   ✗
Berm   ✗
Unfinished   ✗
No Known Excavation   ✓
Other   ✗

Other

Gang Working:
✗   None

Ditches:
✓   None

Number of Ditches:  1

Annex:
✗   None

References

Bowen E.G. and Gresham, C.A. 1967. History of Merioneth 1, Dolgellau, 261.

Smith, G.H. 2006. A survey of prehistoric defended enclosures in north-west Wales 2005-2006: Gwynedd Dwyfor and Meirionnydd. Report No 634. Part I: Survey Report. Bangor: Gwynedd Archaeological Trust.

Waddington, K. 2013. The Settlements of Northwest Wales: From the Late Bronze Age to the Early Medieval Period, Cardiff: University of Wales Press.



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This work is licensed under CC BY-SA 4.0 and should be cited as:

Lock, Gary and Ralston, Ian. 2024. Atlas of Hillforts of Britain and Ireland. Available at: https://hillforts.arch.ox.ac.uk


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